52
Process Image
WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
Collections for harmonics analysis (020, 021, 022)
The corresponding harmonics analysis collection is selected in the I/O module
output data and the MET_IDs set. These measured values are then made available
in the input data.
The type of measured value is selected in the harmonics analysis collections using
the corresponding MET_ID_1. The following types of measured data are
available:
MET_ID_1 = 001 :
RMS value current for fundamental component or
harmonic
MET_ID_1 = 002 :
RMS value voltage for fundamental component or
harmonic
MET_ID_1 = 003 :
THD (Total Harmonic Distortion) for fundamental
component or HD (Harmonic Distortion) for current
harmonic
MET_ID_1 = 004 :
THD for fundamental component or HD for
voltage harmonic
MET_ID_2, MET_ID_3 and MET_ID_4 are then used to select the harmonic
(MET_ID_x = 1 ... 40) or fundamental component (MET_ID_x = 100) for the
measured values defined by MET_ID_1 are to be made available in the process
image input data. This means that 3 measured values are provided with the input
data.
Example 1:
Byte Output data
Input data
0 0x00
0x48
1 0x03 (Status query)
0x00
2 0x00
0x40
3 0x14 (COL_ID)
0x14 (COL_ID_SEL)
4 0x02 (MET_ID_1)
0x02 (MET_ID_1_SEL)
5 0x64 (MET_ID_2)
0x64 (MET_ID_2_SEL)
6 0x01 (MET_ID_3)
0x01 (MET_ID_3_SEL)
7 0x02 (MET_ID_4)
0x02 (MET_ID_4_SEL)
8 ---
Measured value type Ueff - [7:0] = 0x02
9
---
Measured value type Ueff - [15:8] = 0x00
10
---
Measured value type Ueff - [23:16] = 0x00
11
---
Measured value type Ueff - [31:24] = 0x00
12
---
Ueff – Fundamental component L1 [7:0]
13
---
Ueff – Fundamental component L1 [15:8]
14
---
Ueff – Fundamental component L1 [23:16]
15
---
Ueff – Fundamental component L1 [31:24]
16
---
Ueff – 1st harmonic L1 [7:0]